Pictures of President's Day at Mount Vernon

Pictures of President's Day at Mount Vernon

Drew Angerer / Getty Images

Members of the U.S. Army 3rd Infantry Regiment (The Old Guard) line up in formation during a military exercise exhibition for visitors at George Washington's Mount Vernon Estate, February 17, 2014 in Mount Vernon, Virginia. Monday is President's Day in the United States, where the nation celebrated the presidential birthdays of George Washington and Abraham Lincoln.

Members of the U.S. Army 3rd Infantry Regiment (The Old Guard) line up in formation during a military exercise exhibition for visitors at George Washington's Mount Vernon Estate, February 17, 2014 in Mount Vernon, Virginia. Monday is President's Day in the United States, where the nation celebrated the presidential birthdays of George Washington and Abraham Lincoln. (Drew Angerer / Getty Images)

Members of the U.S. Army 3rd Infantry Regiment (The Old Guard) line up in formation during a military exercise exhibition for visitors at George Washington's Mount Vernon Estate, February 17, 2014 in Mount Vernon, Virginia. Monday is President's Day in the United States, where the nation celebrated the presidential birthdays of George Washington and Abraham Lincoln.